I am an Urban Planner originally from the states, but working and living in the middle east.
Having lived in 'the fun sandpit' for so many years, I prefer city tourism over the rushing around to visit "tourist sites": just sitting in the park, eating, drinking, shopping, and a lot of walking. But I'm not adverse to hiking, running, rock-climbing, and swimming.
Note for hosts: I'm no smoking, no drugs, respectful, and keep a low footprint, knowing this is your home, too.
While I don't have a large place to list myself, I do host for couchsurfing, which is a similar, interesting concept. I am also a member of the global Hash House Harriers (this is not drug-related!).